Scoble posted his new video interview with Jim Allchin, Group VP of Platforms (tip: he runs Windows and reports to Steve Ballmer). Jim has been running Longhorn on his primary work machine for three months now and I can attest to it- I was in a review w/him as it was installing in his office next-door.
Jim talks about Longhorn, about his days as a professional musician (he's an accomplished guitar player), scenarios that will be enabled with Longhorn, what's worked and what hasn't in the past.
The video is conversational and raw- two guys and a handheld-camera. He's also very frank about where we are in the development process. The goal at WinHEC wasn't to thrill- it was about hardware fundamentals- drivers and connectivity models to enable the "thrilling" features that are being being built on-top.